bootctl: move arg_touch_variables checkers to bootctl-util.c

No functional change, just refactoring.

src/bootctl/bootctl.c

@@ -229,29 +229,6 @@ static int print_loader_or_stub_path(void) {
         return 0;
 }
 
-bool touch_variables(void) {
-        /* If we run in a container or on a non-EFI system, automatically turn off EFI file system access,
-         * unless explicitly overridden. */
-
-        if (arg_touch_variables >= 0)
-                return arg_touch_variables;
-
-        if (arg_root) {
-                log_once(LOG_NOTICE,
-                         "Operating on %s, skipping EFI variable modifications.",
-                         arg_image ? "image" : "root directory");
-                return false;
-        }
-
-        if (!is_efi_boot()) { /* NB: this internally checks if we run in a container */
-                log_once(LOG_NOTICE,
-                         "Not booted with EFI or running in a container, skipping EFI variable modifications.");
-                return false;
-        }
-
-        return true;
-}
-
 GracefulMode arg_graceful(void) {
         static bool chroot_checked = false;